Thanks Billson. :) I think both the phones have almost same internals as their predecesors i.e. HTC One and Xperia Z1. Does USB audio work with these 2? If yes, then it should be working with M8 and Z2 as well.   EDIT: e18 is well above my budget. :(

I'm new here, please be gentle. :) I am thinking of buying FiiO E07K as my first DAC/AMP.  My question is, are HTC M8 and Xperia Z2 able to output digital sound via USB and feed that input to FiiO E07K's DAC. I want to use FiiO E07K's DAC instead of phone's inbuilt one. Is it possible? Will I...

A noob here. Can I use e07k's DAC with m8, via usb to usb? Is USB audio supported in m8? Thanks.